Firozabad vs Purnia
Side-by-side air quality comparison between Firozabad and Purnia.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Firozabad | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 59.60 | 105.90 |
| PM10(µg/m³) | 146.70 | 109.00 |
| NO₂(µg/m³) | 22.30 | 25.20 |
| SO₂(µg/m³) | 8.40 | 20.10 |
| O₃(µg/m³) | 71.00 | 67.00 |
| CO(µg/m³) | 494.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Firozabad averaged an AQI of 73 while Purnia averaged 133 — a 60-point (82%) gap, with Purnia the more polluted and Firozabad the cleaner of the two. On 581 days when both cities reported, Firozabad was cleaner on 432 of them; the average daily gap was 85 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Firozabad logged 0.6% Severe days and 56.6% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Firozabad 68 days, Purnia 14 days.
Year-over-year progress
Firozabad has improved by 70 AQI points (49%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Firozabad reached AQI 489 at Nagla Bhau (UPPCB) on 2021-11-09; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Firozabad spans 2 CPCB stations with a 19-point spread (min 88, max 107); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Firozabad has better air quality with an AQI of 132 compared to Purnia's 253. That's a significant difference of 121 points.